JPH0436127A - Planting method for tree and system therefor - Google Patents

Abstract

PURPOSE:To provide the title method so designed that a lattice-shaped steel material with the channels turned downward is put into a root pit and connected to anchors and the root pot is laid thereon and fixed, thereby ensuring the tree root pot to be supported and planting the tree at a small lot without falling even if struck by strong winds. CONSTITUTION:A lattice-shaped sink-preventive member 1 consisting of a steel material 2 with the channels 2b turned downward is put into the bottom 8b of a root pit 8 and connected to anchors 5 through connecting members 4. A tree root pot 7 is then laid thereon, bound and fixed with branch line binding members 3 and wires 4, and a space around the root pit is filled with soil, thus planting the tree.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tree planting method and a tree planting apparatus particularly suitable for planting large trees.

[Conventional technology 1] Conventionally, in order to plant a tree, a root ball with a root wrap is inserted into a seed hole that has been previously excavated in the ground, and then soil is buried in the gap in the seed hole, and at the same time, a method is used to prevent the tree from tipping over. The method used was to support the trunk by fixing a pillar to the trunk, or by extending a branch line anchored into the ground.

However, such conventional methods require pillars or branch lines to prevent the trees from tipping, which impairs the scenery and obstructs traffic. The more it becomes, the more noticeable it becomes.

[Problems to be Solved by the Invention] Therefore, in order to eliminate such inconveniences, a tree planting method as shown in FIG. 3 has recently been adopted.

As shown in the figure, a root ball 22 with a root wrapping 21 is inserted into a seed hole H drilled in the ground, placed on the root hole bottom B, and a belt 25 is wrapped around the root 24. The tree is connected to an anchor 26 that has been driven into the soil, and the soil is buried in the seed hole cavity.The tree can be supported when standing upright without installing support means such as pillars or branch lines on the ground to prevent it from tipping. This makes it possible to plant street trees in narrow spaces.

However, in this tree planting method, when the tree grows large, the bottom B of the seed hole sinks due to the tree's own weight, leading to a situation where the tree leans over.

Furthermore, when a tree is planted using the above method, the soil buried in the seed hole cavity is still soft at the initial stage of planting, and if a lateral force such as a strong wind is applied to the planted tree, the root ball 22 may move horizontally. Each time the tree swings, the anchor 26 is also pulled, creating a gap in the soil around the root ball 22, causing the inconvenience of the tree gradually leaning over.

The present invention has been made to solve these problems, and is designed to reliably support the tree root ball in the ground, especially when planting large trees, and prevent the tree root ball from sinking after being erected. To provide a method and device for planting a tree, which can stand on its own without leaning even when hit by strong winds.

[Means for Solving the Problems j] The present invention for solving the above problems will be explained with reference to the drawings shown in the examples. The shaped steel material 2 is placed on the seed hole bottom 8b so that the groove 2b faces downward, and the sinking prevention member 1 is connected to a plurality of anchors 5 driven into the seed hole bottom ff18b soil. A tree planting method characterized by placing a tree root ball 7 on top and binding and fixing the root ball to the subsidence prevention member, and then burying soil in a gap 8a around the root ball 7, and a channel. Part 2 of type steel material 2
Subsidence prevention member 1 connected and connected in a grid shape with b facing downward
A branch line binding means 3 for binding and fixing the tree root #7 placed on the subsidence prevention member 1 is placed at key points around the subsidence prevention member 1, and an anchor connecting means 4 is installed under the subsidence prevention member 1. This is a tree planting device characterized by being provided with.

[Function] According to the tree planting method and the tree planting device of the present invention, when the tree root ball 7 is buried in the seed hole 8, the tree is placed on the subsidence prevention member l placed on the seed hole bottom 8b. Since the tree is planted, the subsidence prevention member 1 acts as a subsidence resistance means for the tree root ball 7.

In addition, since the channel-shaped steel material 2 constituting the subsidence prevention member is placed on the bottom of the seed hole 8 with the full side 2b facing downward, the protruding plate 2c of the channel-type steel material 2 digs into the soil at the bottom of the seed hole 8b. Lateral swinging of the root ball 7 can be prevented.

Furthermore, since the anchors 5 are driven in multiple parts around the subsidence prevention member 1, the tilting of the subsidence prevention member 1 is prevented by the bow tension of each anchor, and the channel-shaped steel member 2
Combined with the action of digging into the soil, it is possible to achieve robust prevention of tree subsidence and leaning.

Note that since the subsidence prevention member 1 is made by connecting and joining channel-type steel members 2 in a lattice shape, the subsidence prevention member 1 has an appropriate space 1a, so that it is possible to leave the subsidence prevention member 1 as it is after planting trees. Even if the tree is placed in a tree, the growing roots can pass through the space 1a and help the tree stand on its own without hindering the growth of the tree roots.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 tal and fbl are side views of the tree planting method of the present invention, and Section 2 (ai is a perspective view of the subsidence prevention member 1 used in the planting method shown in Section 1. fbl is a partially cutaway view.

As shown in section 2 (a) and fbl, the subsidence prevention member 1 used in this embodiment has a planar area large enough to weld and connect the channel-shaped steel members 2 and place the root ball 7 of the tree to be planted. It is constructed in a rectangular lattice shape, and has a cavity 1a, and each channel-shaped steel member 2 has a full 2b facing downward (
Fig. 2 1b)), members 4 for connecting anchors 5 are protruded from a part of each corner of the opposite side of the groove 2b, and are placed on subsidence prevention members 1 on each side. Tree root ball 7
A member 3 for binding and fixing is provided with a through hole 3a.

The subsidence prevention member 1 of this embodiment is constructed in a rectangular lattice shape as shown in the first figure, and also has a channel-shaped outer periphery to support the root ball by digging a seed hole with a circular cross section. It may be a ring made of steel with a lattice-like shape at the center, or various other shapes may be constructed using channel-type steel.

In order to plant a tree using such a subsidence prevention member 1, as shown in FIG. Anchor 5 in advance
are cast at positions corresponding to the corners of the subsidence prevention member 1, the subsidence prevention member 1 is placed on the seed hole bottom 8a, and the upper end of each anchor 5 is fastened to the connecting member 4 of the subsidence prevention member 1.

After that, as shown in FIG. The root ball 7 and the subsidence prevention member 1 are connected and fixed.

Finally, soil is buried in the seed hole cavity 8a around the root ball 7.

[Effects of the Invention] As explained above, according to the tree planting method and planting device of the present invention, even if the tree to be planted is large, the tree root ball is bound to the subsidence prevention member. This allows the root ball to stand upright without sinking, and is pulled by multiple anchors installed in the soil around the bottom of the sinking prevention member to prevent it from tipping. There is no risk of trees leaning over due to subsidence.

In addition, since the channel-shaped steel material that constitutes the subsidence prevention member is placed on the bottom of the root hole with the groove facing downward, the protruding plate part of the channel-shaped steel material is placed on the bottom of the seed hole due to the tensile force of each anchor and the weight of the tree. It can penetrate into the soil and prevent the root ball from swinging sideways. Therefore, even if a planted tree is pushed from the side by strong winds, etc., the root ball is prevented from swinging laterally, and in combination with the subsidence prevention effect of the above-mentioned subsidence prevention member and the tilting prevention effect of the anchor, the tree is sturdy. It is possible to plant trees.

In addition, after planting, the roots that grow and extend from the roots can pass through the cavity of the subsidence prevention member, so that good tree growth can be assisted.

In addition, because it does not require wooden supports or branch lines to prevent it from tipping, it does not spoil the scenery or obstruct traffic (and is easy to install even in narrow spaces). Is possible.

[Brief explanation of drawings]

FIG. 1 (at and fb) is a side view of the tree planting method of the present invention, and FIG. 2 fa) is a perspective view of the subsidence prevention member 1 used in the tree planting method shown in FIG. Figure 2 fbl is a partially cutaway perspective view thereof. FIG. 3 is a side view showing a conventional tree planting method.

Claims (2)

[Claims] (1) A subsidence prevention member composed of channel steel materials arranged in a lattice shape is placed on the bottom of the root hole so that the grooves of the channel steel material face downward, and a plurality of said subsidence prevention members are cast into the soil at the bottom of the root hole. The tree is connected to the anchor, and after placing the tree root ball on the subsidence prevention member and binding and fixing the root ball to the subsidence prevention member, soil is buried in the gap around the root ball. How to plant. (2) Branch line ties for binding and fixing tree root balls placed on the subsidence prevention member at important points around the subsidence prevention member, which is connected and joined in a lattice shape with the grooves of each channel steel member facing downward. 1. A tree planting device comprising: a means for planting a tree; and a connecting means for an anchor driven into the soil below the subsidence prevention member.